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BC Laboratories, Inc <br /> TRC Alton Geosctence Project 6981 <br /> 21 Technology pave Project Number (none] <br /> Irvine CA,92618-2302 Project Manager Anju Farfan Reported 07/08/05 10 51 <br /> Volatile Organic Analysis (EPA Method 8260) <br /> BCL Sample ID. 0506373-01 Client Sample Name 6981, MW-7, MW-7, 6/28/2005 7 32 OOAM, Basi/Melissa <br /> Prep Run Instru- QC MB Lab <br /> Constituent Result Units PQL MDL Method Date DatelTlme Analyst ment ID Dilution Batch ID Bias Quals <br /> Benzene NO ug/L 0 50 012 EPA-8260 07/01/05 07/02/05 0509 svm M5-V4 1 BOG0008 NO A39 <br /> 1,2-Dibromoethane ND ug/L 0 50 011 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 ND A39 <br /> 1,2-Dichlaroethane ND ug/L 0 50 025 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 NO A39 <br /> Ethylbenzene ND ug/L 0 50 0 13 EPA-8260 07/09105 07/02/05 0509 svm MS-V4 1 BOG0008 ND A39 <br /> Methyl 1-butyl ether ND ug/L 0 50 015 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 ND A39 <br /> Toluene NO ug/L 0 50 015 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 NO A39 <br /> Total Xylenes NO ug/L 1 0 040 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 NO A39 <br /> t-Amyl Methyl ether ND ug/L 050 031 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 ND A39 <br /> t-Butyl alcohol NO ug/L 10 10 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 NO A39 <br /> Dusopropyl ether ND uglL 0 50 025 EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 60G0008 ND A39 <br /> 4 Ethanol NO uglL 1000 110 EPA-8260 07101/05 07/02/05 0509 svm MS-V4 1 SOG0008 ND A39 <br /> Ethyl t-butyl ether NO ug/L 0 50 027 EPA-8260 07/01/05 07/02/05 0509 svm MS44 1 BOG0008 NO A39 <br /> 1 2-Dichloroethane-l4(Surrogate) 99 8 % 76-114 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 A39 <br /> Toluene-d8(Surrogate) 99 3 % 88-110 (LCL-UCL) EPA-8260 07/01/05 07/02/05 05 09 svm MS-V4 1 BOG0008 A39 <br /> 4-Bromofluorobenzene(Surrogate) 91 3 % 86-115 (LCL-UCL) EPA-8260 07/01/05 07/02/05 0509 svm MS-V4 1 BOG0008 A39 <br /> I <br /> I I <br /> BC Laboratories The results in this report apply to the samples aearr ed in accordance with the chain of custody document This analytical report must be repod in els enuretj! <br /> All results listed in this report are for rhe exclusive use oFthe submuting party BC Laboratories ones no responsibility for report alteration separation derahment or third perry urterpretatt. <br /> 4100 Atlas Court• Bakersfield, CA 93308 • (661)327-4911 • FAX(661) 327-1918•www bclabs corn Page 5 of 46 <br />